I'm attempting to translate an old (ExtJS 2.0) extension class for GridPanel that uses the deprecated getColumnModel method. What would be the proper 4.0 methodology for getting the column model of a...

At the time I was attempting to use the custom feature steffenk had added as per his posts on the subject. However that seems to be a bit of a red herring as simply putting the feature configurations...

OK, that seems to work. However it would apear that I need to define every field, including the defaults such as leaf and text. So I guess the question is, is this better then simply using record.raw...